33785748481 has 3 divisors (see below), whose sum is σ = 33785932291. Its totient is φ = 33785564672.

The previous prime is 33785748467. The next prime is 33785748497. The reversal of 33785748481 is 18484758733.

The square root of 33785748481 is 183809.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 33327788481 + 457960000 = 182559^2 + 21400^2 .

It is not a de Polignac number, because 33785748481 - 2¹⁵ = 33785715713 is a prime.

It is a super-2 number, since 2×33785748481² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33785748401) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 91905 + ... + 275713.

Almost surely, 2^33785748481 is an apocalyptic number.

33785748481 is the 183809-th square number.

33785748481 is the 91905-th centered octagonal number.

It is an amenable number.

33785748481 is a deficient number, since it is larger than the sum of its proper divisors (183810).

33785748481 is an frugal number, since it uses more digits than its factorization.

33785748481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367618 (or 183809 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 58.

The spelling of 33785748481 in words is "thirty-three billion, seven hundred eighty-five million, seven hundred forty-eight thousand, four hundred eighty-one".